Expansion-block.



' No. 895,158. f ATBNTED AUG. 4, 1908.

L. CAPUTO.

EXPANSION BLOCK.

APPLIQATION FILED JAN. 14. me.

' cated by the broken line G 6 of Fig. 1.

' LOUIS CAPU'lO, OF EAST BOSTON, MASSACHUSETTS.

EXPANSION 451400K.

Specification of Letters Patent.

Patented Aug. 4, 1908.

Application filed January 14, 1908. Serial No. 410,766.

To all whom it may concern:

Be it known'tliat I, Louis Cuero, a citizen of the United States, residino at East. Boston, in the county of Sufl'olk and State of )hissacluiset-ts, have A invented certain new and useful Improvements in Expansion- Blocks, of which the following is a specification, reference being had therein to the accompanying drawing.

)Iy invention relates to expansion blocks for use in walls of brick, stone or other ina-terial for fastening bars, girders or other beams in place or for holding fre-escape brackets in place onbrick walls.

In the drawings which form part of this speciticatiom-Fignre 1 represents a view in side elevation of the expansion block with the expansion member or key in place. Fig. 2 is a front end elevation of same.. Fig. 3 1s a rear end elevation of saine. Fig. 4 is o. longitudinal sectional view of the expansion block with another form of expansion member or key partly inserted. Fig. 5 is o. transverse sectional view on the plane indicated by the broken line 5 5 of Fig. 1. Fig. 6 is a transverse see-tional View on the plane indi- Fig. 7 is a side view of my expansion block supporting a girder. Fig. 3 is e. front. end eleva.- tion of saine. Fig. 9 is a side view of my ex- )aiision block support-ing a bar. Fig. 10 is a. iront elevation of same. Fig. 11 is a front elevation of a pair of my expansion blocks supportingr gi. T-shaped gil-der. Figs. 12 and 13 show the expansion block as applied to other forms of girders.

` My expansion block consists of the two oblong plates 14 15, which when itted together have an opening extending therethrough the outer end of the opening being circuler and the inner end of said opening being in the fhrin of a funnel '2l to receive the conicalsliaped head 25 of the. expansion member or key 24, of the preferred form as shown in Figs. 1, 7 and 9. This conical-shaped head 25 of the expansion member is preferably oval-shaped, as shown in Fig. 3, so that when it is inserted into the opening it will notturny The mouth of t-he tunnel l y slightly larger than the head of the expansion member so that the member will press always in said opening.

ageinst the inner end of the mouth as shown in Fig. 1, and when the nut 27 is turned in on thethread 26 of the member 24 the rear end of the expansion block will be expanded, that l lis' the rear end of t-he plate 15 will be pushed upward from the rear end of the plate 14. T ie opening in these plates 14 15 is also threaded as at 1S and the bore of the' thread decreases in diameter from its forward end .19 to its rear end 20. The expansion member 24 may be threaded if desired but is preferably smooth except a portion of its foiward end .26 upon which the nut 27 turns, but if desired in ex ansion member 31 may be used in the forni o a lag screw as shown iii Fig. 4., which when inserted from the front end of the expansion block will gradually ex and the reni" end as it is turned inward. `oth plates 14 and 15 are rovided on their outer sides with ,concavetli surfaces, prefcrabl)- rough to canse friction, the plate 1i alsohaving a series of teeth 16 on its bottoni side and the plate 15 a series of teeth 17 on its upper Y side for causing friction for purposes as hereinafter stated.

The plat-e215 is provided with slots 23 for receiving the lugs 22 on the plate 14 when in a closed position, so that the two plates can be readily held together when being inserted into a. hole in the wall. Plate 15 is provided with an ear- .28 to be inserted through an opening in the girders 32,35, 36 or 37 to lock them into position within the o iening i'n the wall. Plate 1.5 is also concaveti on its upper side, as at 30, to allow of the restingr thereon of a bar or tubing 33, and is provided with a notch 29 in which the head 31 of the tube or bar 33 will rest so that the tube or bar will be locked within the opening in the wall. The teeth 17 preferably extending around the concaved surface 30 to grip or cause friction on the tube or bar on its lengthwise motion.

Figs. 7 and 9 show the expansion block with its expansion member partly in place and with the girders ortubing in place, all ready to be inserted into the opening in the wall. .An o )eningr is made of the desired size in .the Y rick wall and the ex ansion block and girder inserted in place, tuen the nut 27 is turned inwardly on the thread 26 Causing the conical head 25 to be pulled into the opening 21, expanding the Aplates 14 15, so that a grip is made on the inner walls of the opening in the wall and the block and girder held tightly in place. When desired the expansion block can tirstY be inserted into the opening in the wall and the expansion member of a. forni shown in Fig. 4 afterwards Att is to be understood that my invention is not limited to the spot-dic details of con-v .struction shown in the accompanying drawing, but that said details niej* be varied in the practical carrying out of my invention. lt is :1li-:o to be understood that the combinations specifically set forth in the 'several claims :ire intended to be separately claimed without. limitation to the use in" connection therewith of other features and details of construction illustrated.

l claim as my inventionz- 1. .Ln expansion block eensis'ng of two plates 14, 15, .vhicl1`when tilted together having-nn opening extending therethrough, the inner end of snid opening being in the Y forni of :t funnel, slots 23 in plete 15, lugs 22 l on plete 14, nconicnl heeded expansion key for the plates, and an outward and upward extending ear 28 on the rear of the pla-te 15 .for holding a girder, substantially 'as shown and described.

2. An expansion block consisting of two plates having n bore extending therethrough, l

through having at rear oblong funnel-shaped mouth, an exyfensionniember rovded with an oblong conical-shaped hea a recess 30 and a notch 2E) inthe outer side of the'upper plete und a. series of teeth extending around said recess, substantially as 'shown and for the .purposes described.

In testimony whereof I afl'i; my Signat-ure 'n1 presence of two witnesses.

LOUIS eArUro. Witnesse:

CHARLES F. A. SMITH. ALFRED W. ELLs. 

